Pneumatic knee-pad



J. T. SHELTON. PNEUMATIC KNEE PAD.Y

APPLICATION FILED MAI/21.1919.

1,399,584. Patented Dec. 6, 1921.

UNITED JAMES l?. SHELTON,

UJF CHOFER, TEXAS.

rnnunre'rrc truien-ran.

Application filed May 2l,

To all 'Lo/tom` it may conc/era f Be it lrnoivn that l, Jar/Ins T. S51-rumen, citizen ot the United States ot el mei'ica` residing at Coopen in tbe county ot1 Delta and @tate of lexas7 have invented new and useful Improvements in Pneumatic linee-Pluis, ol" which the tollowing; is a specitication.

The object oit the 'invention is to provide a knee pad for use by Workmen and others Who are required to maintain a lnieeling posture for protracted periods, the object ot the pad being to protect tbe clothingn and also to cushion the knee so as to relieve the inconvenience ordinarily experienced` in counection with ivorlt ot the character indi` cated. i

fit further object of the invention to provide a device ot tbe type indicated which can be readily applied and removedj can be adapted with facility to the purposes ot' the. wearer. and when not in use may be stored in a small space and thus carried `with ta-` cility. and which when required may be readily inflated to the desired extent Without tbe use of supplemental apparatus.

ln carrying out these objects the invention consists vin a construction,combination and relation ol" parts in Which. a prclierred embodiment is disclosed in the drawings? it being; understood that changes in torni an d proportion may be resorted to within the scope of the claim Without departing' trom ing oi straps `and the engagin the principles involved.

ln the drawings:

Figure l is a side vieiv oct the improved Spad.

Fig. 2 is a sectional view taken longitudinally oiE the same.

l'iigr. is a transverse sectional view.

.lhe device consists essentially of a cas--` innhaving; an exterior element l0 extended at the sides to form ears il to which may be attachefil the fastening' elements l2 consistn buclrles lll, and an inner element lll secured to the outer element and forming a saclr which is open at one end ttor closure by a suitable dan l5 bold in its normal or closed position by lacingr 1G. lt is to be noted that the lacing 16 spans a slit formed in the element l0 adjacent the upper end and across the arch ot tbe latter; so that when the lacing is loosened. the slit may be spread and, the flap l5 thus easily withdrawn to give access to the interior ot the casing.` Within this sacldilre casing is disposed an inflatable tube or bag Speceation of Letters Patent.

Patented Dec. d 1921..

1919. Serial No. 298,653.

l? et rubber or equivalent material having a valve tube 1.8 and cap 19 similar' to those `employed for" example in connection with.

4required cushioning effect to .suitt-lie purposes of the operator.

Secured by means ot rivets 20 or the eouivalent thereto, to the exterior element olE the casing' is a tread or slice. 2l of leather, rubber, metal, or any equivalent Wear resisting; material designed for contact with the iioor or other surface from which the linee ot the operator is to be protected.

Obviously the :uljustability of the fasten* ing' means consisting7 as illustrated, of the straps and'buckles Will adapt tbe device to be readily and snugly fitted to the knee of tbe wearer, a range of adaptability being` also secured by reason of the separate ears l'l between which at each side of tbe device there is provided the slot Q2, and at the same time said ears constitute side protect ingr Wings to prevent contact of the clothing with adjacent objects, While the yieldability of the cushion adapts it to conform to tbe positions and movements of the operator and thus avoid the inconveniences in this respect to which Woiii'lrrnen are subjected7 particularly when operating on hard or damp surfaces.

Claim:

. l ltnee pad consistingof a casing having an outer element extended at the sides to form ears for spanning relation to the leg above and belovvT the knee. fastening straps secured to said ears an inner element secured to the outer element and forming a saclr which is open at one end, said inner element being provided with a flap serving as a closure for said casing, the outer element beings` slit transversely at the upper end across the arch thereot, lacing spanning said slit, and an inflatable bag disposed between the inner and outer elements and pro vided with an inflation valve disposed adjacent said slit, tne said closure Hap embracing; said valve and being` held in the position of closure when the slit is drawn closed by the said lacing.

In testimony whereof he affixes his signature.

JAMES T. SHELTON. 

